<template>
  <div>
        <!-- 面包屑区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片区域 -->
    <el-card>
        <!-- 提示区域 -->
        <el-alert title="添加商品信息" type="info" center show-icon :closable="false"> </el-alert>
        <!-- 步骤条  -->
        <el-steps :space="200" :active="activeIndex-0" finish-status="success" align-center>
            <el-step title="基本信息"></el-step>
            <el-step title="商品参数"></el-step>
            <el-step title="商品属性"></el-step>
            <el-step title="商品图片"></el-step>
            <el-step title="商品内容"></el-step>
            <el-step title="完成"></el-step>
        </el-steps>
        <!-- tab栏 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-position="top">
            <el-tabs :tab-position="'left'" v-model="activeIndex" style="height:100%" :before-leave="beforeTableLeave" @tab-click="tabClicked">
                <el-tab-pane label="基本信息" name="0">
                    <el-form-item label="商品名称" prop="goods_name">
                        <el-input v-model="addForm.goods_name"></el-input>
                    </el-form-item>
                    <el-form-item label="商品价格" prop="goods_price">
                        <el-input v-model="addForm.goods_price"></el-input>
                    </el-form-item>
                    <el-form-item label="商品重量" prop="goods_weight">
                        <el-input v-model="addForm.goods_weight"></el-input>
                    </el-form-item>
                    <el-form-item label="商品数量" prop="goods_number">
                        <el-input v-model="addForm.goods_number"></el-input>
                    </el-form-item>
                    <el-form-item label="商品分类">
                        <el-cascader expand-trigger="hover" :options="cateList" :props="cateProps" v-model="addForm.goods_cat" @change="handleChange"></el-cascader>
                    </el-form-item>
                </el-tab-pane>
                <el-tab-pane label="商品参数" name="1">
                    <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
                        <el-checkbox-group v-model="item.attr_vals">
                            <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border></el-checkbox>
                         </el-checkbox-group>
                    </el-form-item>
                </el-tab-pane>
                <el-tab-pane label="商品属性" name="2">
                    <el-form-item v-for="item in onlyTableData" :key="item.attr_id" :label="item.attr_name">
                        <el-input v-model="item.attr_vals"></el-input>
                    </el-form-item>
                </el-tab-pane>
                <el-tab-pane label="商品图片" name="3">
                    <el-upload :action="uploadURL" :on-preview="handlePreview" :on-remove="handleRemove"  list-type="picture" :headers="headerObj" :on-success="handleSuccess">
                        <el-button size="small" type="primary">点击上传</el-button>
                    </el-upload>
                </el-tab-pane>
                <el-tab-pane label="商品内容" name="4">
                    <quill-editor v-model="addForm.goods_introduce">

                    </quill-editor>
                    <el-button type="primary" style="margin-top:15px" @click="addGoods">
                        添加商品
                    </el-button>
                </el-tab-pane>
            </el-tabs>
        </el-form>
    </el-card>



    <!-- 图片预览dialog -->
    <el-dialog title="图片预览" :visible.sync="previeVisible" width="50%">
        <img :src="previewPath" alt="" style="width:100%">
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
    data() {
        return {
            activeIndex:'0',
            addForm:{
                goods_name:'',
                goods_price:0,
                goods_weight:0,
                goods_number:0,
                goods_cat:[],
                pics:[],
                goods_introduce:'',
                attrs:[]
            },
            addFormRules:{
                goods_name:[
                    {required:true,message:'请输入商品名称',trigger:'blur'}
                ],
                goods_price:[
                    {required:true,message:'请输入商品价格',trigger:'blur'}
                ],
                goods_weight:[
                    {required:true,message:'请输入商品重量',trigger:'blur'}
                ],
                goods_number:[
                    {required:true,message:'请输入商品数量',trigger:'blur'}
                ],
                goods_cat:[
                    {required:true,message:'请输入商品分类',trigger:'blur'}
                ]
            },
            cateList:[],
            cateProps:{
                label:'cat_name',
                value:'cat_id',
                children:'children'
            },
            manyTableData:[],
            onlyTableData:[],
            uploadURL:'http://127.0.0.1:8888/api/private/v1/upload',
            headerObj:{
                Authorization:
                window.sessionStorage.getItem('token')
            },
            previewPath:'',
            previeVisible:false
        }
    },
    created() {
        this.getCateList()
    },
    methods: {
        async getCateList(){
            const {data:res} = await this.$http.get('categories')
            if(res.meta.status!==200){
                this.$message.error('获取商品分类列表失败！')
            }
            this.$message.success('获取商品分类成功！')
            this.cateList = res.data
        },
        handleChange(){
            console.log(this.addForm.goods_cat);
            if(this.addForm.goods_cat.length!==3){
                this.addForm.goods_cat=[]
            }
        },
        beforeTableLeave(activeName,oldActiveName){
            if(oldActiveName === '0' && this.addForm.goods_cat.length!==3){
                this.$message.error('请先选择商品分类！')
                return false
            }         
        },
        async tabClicked(){
            console.log(this.activeIndex);

            if(this.activeIndex === '1'){
                const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{
                    params:{sel:'many'}
                })
                if(res.meta.status!==200){
                    return this.$message.error('获取动态参数列表失败')
                }
                res.data.forEach(item=>{
                    item.attr_vals=item.attr_vals.length===0? []:item.attr_vals.split(',')
                })
                this.manyTableData = res.data
                console.log(this.manyTableData);

            }else if(this.activeIndex ==='2'){
                const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{
                    params:{sel:'only'}
                })
                if(res.meta.status!==200){
                    return this.$message.error('获取静态属性列表失败')
                }
                
                this.onlyTableData = res.data
                console.log(this.onlyTableData);
            }
        },
        handlePreview(file){
            console.log(file);
            this.previewPath = file.response.data.url
            this.previeVisible=true
        },
        handleSuccess(response){
            console.log(response);
            const picInfo ={pic:response.data.tmp_path}
            this.addForm.pics.push(picInfo)
            console.log(this.addForm.pics);
        },
        handleRemove(file){
            const filePath = file.response.data.tmp_path
            const i = this.addForm.pics.findIndex(x=>x.pic===filePath)
            this.addForm.pics.splice(i,1)
            console.log(this.addForm.pics);

        },
        addGoods(){
            this.$refs.addFormRef.validate(async valid=>{
                if(!valid){
                    return this.$message.error('请填写必填项！')
                }
                const form = _.cloneDeep(this.addForm)
                form.goods_cat =form.goods_cat.join(',')
                console.log(form)
                console.log(this.manyTableData);
                console.log(this.onlyTableData);
                this.manyTableData.forEach(item=>{
                    const newInfo={
                        attr_id :item.attr_id,
                        attr_value:item.attr_vals.join(',')
                    }
                    this.addForm.attrs.push(newInfo)
                })
                this.onlyTableData.forEach(item=>{
                    const newInfo={
                        attr_id :item.attr_id,
                        attr_value:item.attr_vals
                    }
                    this.addForm.attrs.push(newInfo)
                })
                
                form.attrs = this.addForm.attrs
                console.log(form);

                const {data:res} = await this.$http.post('goods',form)
                if(res.meta.status!==201){
                    this.$message.error(res.meta.msg)
                } else{
                    this.$message.success("添加商品成功！")
                    this.$router.push('/goods')
                }
               
            })
        }
    },
    computed:{
        cateId(){
            if(this.addForm.goods_cat.length===3){
                return this.addForm.goods_cat[2]
            }
            return null
        }
    }
}
</script>

<style scoped> 
.el-checkbox{
    margin: 16px !important;
}
</style>